fix(chord_composer): ignore repeated keys

[fxliang]

Pull request

Issue tracker

Fixes will automatically close the related issue

Fixes #

with #828 chord_composer/finish_chord_on_first_key_release: true, the left keys of previous chord, may be inserted
to the new chord.

test procedure (combo_pinyin):

1. press w l , get ce not finishchord
2. release l, get ce finishchord, w saved to the prev_pressed_
3. hold the w key, system may resend keydown event of w, as it still in the prev_pressed_, it will not be insert to new chord pressed_
4. press s d j, get shi not finishchord
5. the held w will repeat keydown event, will still be ignored.
6. release d, finish current chord, save sj to prev_pressed_(with w deleted), repeat the new loop on and on.

Feature

Describe feature of pull request

Unit test

• Done

Manual test

• Done

Code Review

1. Unit and manual test pass
2. GitHub Action CI pass
3. At least one contributor reviews and votes
4. Can be merged clean without conflicts
5. PR will be merged by rebase upstream base

Additional Info

[lotem]

It's impossible to understand the code. Let's remove the feature if it requires such complicated logic.